Which of the following expressions could give the total amount of a $45 restaurant bill with a 15% tip added on? (0.15)($45) (1.15)($45) 1 + (0.15)($45) $45 + 0.15

Given a normal distribution with µ =50 and σ =4, what is the probability that 5% of the values are less than what x values? between what two x values (symmetrically distributed around the mean) are 95 % of the values? instructions: show all your work as to how you have reached your answer. don’t simply state the results. show graphs where necessary.